function Area() {
    var width = 0;
    var height = 0;
    if (arguments.length >= 1) {
        width = height = arguments[0];
    }
    if (arguments.length > 1) {
        height = arguments[1];
    }
    return width * height;
}

console.log(Area());
console.log(Area(233));
console.log(Area(666, 250));
